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首页> 外文期刊>Polymer Composites >Effects of Stearic Acid on the Interface and Performance of Polypropylene/Superfine Down Powder Composites
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Effects of Stearic Acid on the Interface and Performance of Polypropylene/Superfine Down Powder Composites

机译：硬脂酸对聚丙烯/超细羽绒粉复合材料界面和性能的影响

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摘要

To manufacture the hygroscopic sheets available for functional application, superfine down powder (SDP) and stearic acid modified superfine down powder (MSDP) were, respectively, blended and extruded with polypropylene (PP) to produce composite pellets, and the extruded pellets were hot-pressed into composite sheets. The chemical reaction between SDP and stearic acid was characterized using the attenuated total reflection attachment on the Fourier transform infrared. PP/MSDP composites showed more uniform powder dispersion in PP matrix, higher compatibility, and better mechanical properties than that of PP/SDP composites, which showed an evident decrease in tensile strength and elongation at break compared with pure PP. It was worth noting that the Young's modulus of PP/SDP composites was higher than that of pure PP, but lower than that of PP/MSDP composites. The addition of SDP led to a large increase in water absorption of PP/SDP composites. However, the water absorption of PP/MSDP composites decreased slightly compared with that of PP/SDP composites. Furthermore, the effects of SDP and MSDP on the microstructural and thermal properties of different composites were also investigated, respectively.
机译：为了制造可用于功能用途的吸湿片材，将超细粉剂（SDP）和硬脂酸改性的超细粉剂（MSDP）分别与聚丙烯（PP）混合并挤出以生产复合颗粒，然后将挤出的颗粒进行热-压制成复合板。 SDP和硬脂酸之间的化学反应使用傅立叶变换红外光谱上的衰减全反射附件进行表征。 PP / MSDP复合材料比PP / SDP复合材料具有更均匀的粉末在PP基体中的分散性，更高的相容性和更好的机械性能，与纯PP相比，其拉伸强度和断裂伸长率明显降低。值得注意的是，PP / SDP复合材料的杨氏模量高于纯PP，但低于PP / MSDP复合材料。 SDP的添加导致PP / SDP复合材料的吸水率大大提高。但是，PP / MSDP复合材料的吸水率比PP / SDP复合材料的吸水率略有下降。此外，还分别研究了SDP和MSDP对不同复合材料的微观结构和热性能的影响。

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